Modular CAHU (Combination Air Handling Unit) - Customizable HVAC System for Factories, Hospitals, Data Centers | Energy Saving, Low Noise

Structure

Modular air conditioning units usually consist of the following functional sections (which can be increased or decreased according to requirements):

• Air intake section: introduce fresh air or mixed return air.

• Filtration section: equipped with primary, medium or high efficiency filters to purify the air.

• Surface cooling section: cool and dehumidify the air through the cold water coil.

• Heating section: use hot water coil or electric heater to heat the air.

• Humidification section: increase air humidity by steam or ultrasonic wave.

• Air supply section: equipped with centrifugal fan to provide air supply power.

• Noise elimination section: reduce the noise of the unit operation.

• Heat recovery section (optional): Use exhaust energy to preheat/precool fresh air to improve energy efficiency.

Working principle

• Air treatment process:  

  After the fresh air is mixed with the return air, it goes through filtration, temperature and humidity adjustment (surface cooling/heating/humidification), noise elimination and other treatments in turn, and is finally sent into the room by the fan.

• Control logic:  

  The indoor parameters (temperature, humidity, CO concentration, etc.) are monitored in real time by sensors, and the actuators such as cold and hot water valves, humidifiers and air valves are automatically adjusted to achieve accurate control.

Product advantage

• Modular design:Functional segments can be freely combined to meet the needs of different scenes (such as hospitals need efficient filtration and factories need large air volume).

• High efficiency and energy saving:Adopt variable frequency fan and heat recovery technology to reduce energy consumption; COP (Energy Efficiency Ratio) can reach the leading level in the industry.

• Intelligent control:Support Internet of Things (IoT) access, remote monitoring and automatic adjustment to improve operation and maintenance efficiency.

• Stable and durable:The box adopts double-layer galvanized steel plate+thermal insulation material to prevent rust and heat insulation; Core components (such as fans and coils) shall be made of international brands.

• Low noise:Built-in anechoic section and shock absorption design, with running noise ≤60dB(A).
  

Application scenario

• Commercial buildings: office buildings, shopping malls, hotels (stable temperature and humidity and fresh air supply are required).

• Industrial workshop: electronic workshop, pharmaceutical factory (requiring high cleanliness or explosion-proof design).

• Public facilities: hospital, laboratory, data center (precise control of temperature and humidity and air quality).

• Transportation hub: airport, subway station (large air volume, rapid ventilation demand).

Q: What's the difference between a combined unit and a common central air conditioner?

A: The function module of combined unit can be customized, which is suitable for complex scenes; Ordinary central air conditioners are mostly fixed configurations with low flexibility.

Q: Do you need regular maintenance? What is the maintenance cost?

A: It is necessary to clean the filter screen and check the fan bearing regularly, so the maintenance cost is low; Intelligent system can warn faults and reduce the risk of downtime.

Q: Will the noise of the unit affect the indoor environment?

A: Noise can be controlled below 60dB through the design of silencing section and shock absorption, which is usually installed in the computer room or roof and does not affect the room.

Q: The initial investment is high, is it worth it?

A: Although the initial cost is higher than that of split air conditioners, the long-term energy-saving benefits are remarkable (for example, heat recovery technology saves more than 30% of electricity) and the comprehensive cost performance is higher.